Abstract
New high-order current-mode (CM) filter topologies capable of providing all functions simultaneously are presented. The proposed filters are based on digitally controlled current amplifiers and unity gain voltage buffers. The gains of the current amplifiers are digitally programmed to adjust the filters' transfer function coefficients. It is shown that the proposed approach results in more efficient realizations compared with its counterparts based on other CM active elements. Using BSIM3 0.18 μm CMOS models, simulation results of a fourth-order universal filter are provided.
| Original language | English |
|---|---|
| Pages (from-to) | 179-187 |
| Number of pages | 9 |
| Journal | Analog Integrated Circuits and Signal Processing |
| Volume | 67 |
| Issue number | 2 |
| DOIs | |
| State | Published - May 2011 |
Bibliographical note
Funding Information:Acknowledgment Author thanks King Abdulaziz City for Science and Technology (KACST) for the financial support (Project No: AT-28-31).
Keywords
- Active filters
- CMOS mixed analog/digital systems
- Current-mode circuits
- High order filter
ASJC Scopus subject areas
- Signal Processing
- Hardware and Architecture
- Surfaces, Coatings and Films
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